It appears that 'missing item specifics' has been an ongoing problem since at least 2014, judging by previous threads that came up when I typed in my heading.

Some of the item specifics supposedly missing in my listings (and nearly every one of my ~500 supposedly has missing item specifics) are hilarious e.g. a book I have listed that has absolutely nothing to do with cooking is asking that I include the 'regional cuisine' in its item specifics!

But on to my actual question...

I sell a fair bit of clothing, and two of the specifics that mystify me in this category is the difference between 'fabric type' and 'material'. I always include in my description the actual material, and also put it in the 'material' item specifics box, but can anyone tell me what is the relevance of 'fabric type'?